The 3.4 kernel is released, and is the default for qemu* builds, so
we can safely update the default libc-headers version to 3.4.
Built and booted for qemu*
(From OE-Core rev: 3e57510bb11b350fbe15cae2fb5bf851956061ac)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
